Find the x-intercepts of the parabola with vertex (-7,45)
1 answer:
Use the vertex form,
y=a(x-h)^2+ky=a(x+7)^2+45
<span>Use the y-intercept to solve for a</span>-200=a(0+7)^2+45
49a+45=-20049a=-245a=-5
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Answer:
x ≈ 52.6°
Step-by-step explanation:
Using the cosine ratio in the right triangle
cos x = 
= 
, then
x = 
( ) ≈ 52.6° ( to the nearest tenth )
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Answer:
Step-by-step explanation:
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